Opening device for spinning-boxes



Patented Mar. 29,1921.

2 SHEETS-SHEEI I.

I. CLAYTOIIn OPENING DEVICE FOR SPINNING BOXES. APPLICATION FILED APR. 8, i918. 1,373,169.

J. CLAYTON. OPENING DEVICE FOR SPINNING BOXES.

-SHEE12- 2 SHEETS UNITED STATES PATENT oFFlcE.

JAMES CLAYTON, oF covENTY, ENGLAND, AssIGNoR To coURTauLDs, LTD., or

. LoNnoN, ENGLANn.

OPENING DEVICE FOR SPINNNGBOXES.

To all whom t may comer/n:

Be it known that I, JAMES CLAYTON, a subject oi the King of Great Britain, residing at 12 Middleborough road, Coventry, England7 have invented certain new and useful Improvements in Opening devices for Spinning-Boxes,` of which the following is a specilication. y y y The present invention relates to a device for opening spinning boxes and particularly to a `device designed to coperate with a spinning box having a separable cover of the general type shown in my application of even date herewith, the object of my invention beingk to provide a pneumatically 01perated device for Jfreeing the cover from t ie base of thebox. y In the accompanying drawings, c Figure l isa vertical section through an Aopening device in which my invention is embodied in one form;

Fig.` 2 is a vertical section at right angles to Fig. 1, drawnto a smaller scale 4and shown in connection with a spinning box `ofi-the type above mentioned;

Fig. 3 is a similar view showing the coverof the box lifted Figs..;4 and 5 .are respectively cross sections on the lines Fig. 2, and 5`-.5, Fig. 1; y,

Fig. 6` is a vertical section through a modified form of opening device shown-inoperative relation to a spinning box;

Fig. 7 is a transverse section on 7-7, Fig. 6; y

Fig. 8 is a plan of the box base with the cover removed, showing the holding pins.

Without going into detail in regard to its construction, the spinning box here shown isof the general type described in my application of even date herewith. Itysuflices for the purpo'seof the present inventionto point out that itcomprises a base 10 fixed on the spinning spindle 11 and a cooperating cover 12 of inverted basket shape, resting upon the flange 13 in thebase and held in position by thepins 14, which engage the annulus 15 formed in the box wall. When the fiber cake 16. has been completed and is to be removed lfrom the box, some means must be provided for` lifting the cover 12 from the the line base, andmy present invention relates to a suitable device for this purpose.

Specification of Letters Patent. Patented llIaI.` 29, 1921. i i i Application led "April 8, 1918. Serial No. 227,349;

1n the form shown in Figs. 1 to 5 inclul sive, this device comprises a piston cylinder 17 carrying an inlet nipple 18, towhich a supply pipe (not shown) for compressed air may be attached. The lower end of the cylinder carries a post 19having in its upper end a chamber 20 for the group of balls 21. The wall of this chamber is apertured at22 to permit the balls to `project partially therethrou h, complete escape. `Within the cylinder .17 works a piston23 pressed upward by the coil spring 24:,which is confined between the top of the post 19 and the piston head. The stem 25ct the piston passes downward through the chamber 20 and merges by a conical section 2G adjacent the balls 21, into a stem 27 of reduced diameter, which in turn passes downward through the post 19 and terminates in the foot piece 28. The latter forms a stop limiting the upward movement of the piston under the influence of its spring 24.

The upper portion of the cylinder 17 is closed by a plug 29 having a central distributing chamber 30, in which works the plunger valve 31.` An exhaust passage`32 opens to the lower-portion oi the distributing chamber, while a recess 33 extends :fromthe but preventing their i chamber 30 to the top of the inlet passages l 311 (Fig. 5) bored through the plug and communicating with the piston chamber 35.`

The piston 31 has a reduced area 36 adapted to establish communication betweenthe bore 37 of the nozzle 1S and the inlet recess 33, l

but is normally maintained in such position that the bore 37 of the inlet nozzle is closed and the exhaust port 32 is open. Thisposition is assured by the coil spring 38 which surrounds the stem 39 of the piston and is y,

inserted through the hole 43 in the top of the box cover (through which the spinning funnel enters) and is shoved down until the lower end of the cylinder rests upon the flange v44 surrounding the opening 43. The

lengthl of'th'e'postl9 is so predetermined 28 at the lower end of the that inthis position of the device, the foot stem 27 is slightly above the base l0 of the box. If the operatornow depresses the cap 40, the valve 3l vis moved downward, closing the exhaust K moves `4down under pressure, the conical section 26of its stem'25 bears against the balls 2land'fthrusts-the same laterally outward v through'ithe apertures 22 in the wall. of the chamber 20, so that they project sufiiciently beyond'the post to engage the top of the 'box lid 12,as shown in Fig. 3. As the pis- Y pistonk yserves to ton moves farther downward, the foot piece 28is' halted by coming to rest 'on the base of the box, and the pressure lnow exerted by the lift the cover l2 by reason ofthe engagement 'of the balls 21 therewith. The pressure exertedneed not be very great to overcome the resistance ofthe springs 45 which thrust-'the pins 14 outward into engagement with the annulu'sl. As soon as the cover is thus freedthe operator releases thecap 40, and the valve 3lv rises to its normalv position under the influence of its spring 38, aga-inv opening the exhaust port v32 and permitting the air to escape from the piston chamber 35. The piston rises under the action of its spring 24 and again brings its conical section 26 abovey the balls 21, so

that as the' openingdeviee is lifted from the cover, the' balls are returned to their normal position within'the chamber' 20 by their en- '.the'box. The fiber cake mains at rest upon the bottom of gager'nent with the flange-44 of the cover. i The' opening `device may now be withdrawn and the cover readily'lifted by hand from 16 ordinarily rey the box, but should it tend to adhere to the cover, the operatormay lightly tap the latter to bring about this result. p The slightly conicalconturofv the cover lfacilitates the separation off-the Vcake from the' cover in the manner described.

Inthermo'dification shown in Figs. 6, 7 and 8, `Irhave shown kan operating device in which the cover is lifted directly by the compressed air. In this construction the Y rvso device comprises a cylinder 46 having as before a nipple 47, to which a flexible pipe 48 under pressure to the cylinder.` The latter is. closed. at its upper end byia plug 49 .having a handle 50 by which the device may be manipulated. At the lower end of the cylinder 46 is a post 51 chambered at 52 and provided at this point with piercings 53 to permit the escape of air to the interior of the box. A bushing 54, fitted in the upper end of the plug 5l, has its upper surface concavcd, as at 55, to form a seat for the ball valve 56 which normallyrests in this seat. Passing axially through the plug is a stem 57 provided with in the chamber 52 with a retaining washer 58 of such thickness as to allow considerable longitudinal play of the pin 57 in the post. Upon the cylinder YI secure in any suitable way a metal ring 59 faced on its lower side with a packing 60 of rubber or the like, adapted to bear against and seal the opening 43 in the top of the cover when the opening device is applied thereto.

The operation of this modilied arrangement is readily understood from Fig. 6.

en the cover is to be lifted, the operator, grasping the handle 50, inserts the post 5l through the opening 43 in the cover. As the post approaches the bottom of the box, the pin57 engages the latter and is lifted, thus raising the ball 56 from its seat 55 and admitting air through the bushing to the chamber 52, from which it escapes to the interior of the box through the ports 53. Inasmuch as the packing 60 now rests against the flange 44 surrounding the opening 43, the box is closed against the escape of air, and as the air pressure increases in the box, the cover is lifted, carrying with it the cylinder 46. As soon as the cover is freed, the operator lifts the post from the cover, thus permitting the stem 57 to drop back to its normal position, and the ball 56 comes to rest upon its valve seat 55 and prevents loss of air.

Various other modifications will readily occur to those skilled in the art which do not depart from what I claim as my invention.

I claim l. A tool for opening spinning boxes of the type described, comprising a casing element adapted to be inserted through the spinning tube aperture in the box cover, n, shoulder` adapted to bear upon the box cover surrounding said aperture, and pneumatic means. operatingwithin the box to lift the cover from the box base.

2. A tool for opening spinning boxes of the type described, comprising a casing element adaptedv to be inserted in the spinning tube aperture in the box cover, a member adapted to bear against the box base during the opening operation, and associated pneulIonatic means for lifting the cover from said ase.

3. A tool for lifting the cover of spinning boxes of the type described, comprising a tool element adapted to be inserted through the spinning aperture in the box cover,` a member adapted to bear upon the exterior of llO the cover surrounding said aperture, and and bear against the base of the box, topneumatic means operating within the box gether with means underlying the cover in 10 to lift the latter from its base. the inserted position o said thrust means 4. A device for opening spinning boxes of and laterall extruded by said thrust means 5 the type described comprising a casing, a on the application of pressure to the latter. thrust member carried thereby and adapted In testimony Whereorl I have signed my to enter the chamber of the box through the name to this specification. spinning tube aperture in the cover thereof, JAMES CLAYTON. 

